Network Voice Admin(Cisco UCM)

Tata Consultancy Services; Dadri; On-site; INR 900,000 - 1,200,000; Full time

Job summary

Tata Consultancy Services in India seeks a Voice Network Engineer to design, implement and support unified communications and voice platforms. The role covers IP telephony, VoIP, SIP, IVR, conferencing, and call routing in a large enterprise network.

You will monitor voice systems, troubleshoot SIP/RTP issues, apply security controls like SRTP/TLS, and coordinate with providers and internal teams to ensure reliability and regulatory compliance.

Responsibilities

• Voice & Unified Communications
• Administer, configure & support IP telephony, VoIP, SIP, unified communication platforms.
• Manage dial plans, call routing, IVR, voicemail, call recording & conferencing services.
• Support voice components of contact center/collaboration systems.
• Network & Infrastructure
• Design & maintain voice network architecture including QoS, VLANs & voice gateways.
• Optimize voice traffic performance, latency & availability.
• Perform capacity planning & performance tuning.
• Operations & Support
• Monitor voice systems for availability, quality & faults.
• Troubleshoot SIP/RTP/codec issues, call failures & voice degradation.
• Provide L2/L3 support & handle incident/problem/change processes.
• Work with service providers, vendors & internal teams.
• Security & Compliance
• Implement SRTP, TLS, access control & fraud prevention controls.
• Ensure compliance with voice security & regulatory requirements.
• Assist with audits & risk assessments.
• Documentation & Continuous Improvement
• Maintain network diagrams, voice configurations & SOPs.
• Participate in upgrades, migrations & technology refresh.
• Recommend improvements & emerging voice technologies.

Job description

Key Responsibilities*

Voice & Unified Communications

Administer, configure & support IP telephony, VoIP, SIP, unified communication platforms.

Manage dial plans, call routing, IVR, voicemail, call recording & conferencing services.

Support voice components of contact center/collaboration systems.

Network & Infrastructure

Design & maintain voice network architecture including QoS, VLANs & voice gateways.

Optimize voice traffic performance, latency & availability.

Perform capacity planning & performance tuning.

Operations & Support

Monitor voice systems for availability, quality & faults.

Troubleshoot SIP/RTP/codec issues, call failures & voice degradation.

Provide L2/L3 support & handle incident/problem/change processes.

Work with service providers, vendors & internal teams.

Security & Compliance

Implement SRTP, TLS, access control & fraud prevention controls.

Ensure compliance with voice security & regulatory requirements.

Assist with audits & risk assessments.

Documentation & Continuous Improvement

Maintain network diagrams, voice configurations & SOPs.

Participate in upgrades, migrations & technology refresh.

Recommend improvements & emerging voice technologies.